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Tuesday, August 4, 2020 | History

3 edition of Porous media and mixture models for hygrothermal behavior of phenolic composites found in the catalog.

Porous media and mixture models for hygrothermal behavior of phenolic composites

Porous media and mixture models for hygrothermal behavior of phenolic composites

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  • 1 Currently reading

Published by National Aeronautics and Space Administration, Glenn Research Center, National Technical Information Service, distributor in [Cleveland, Ohio], [Springfield, Va .
Written in English

    Subjects:
  • Hygral properties.,
  • Mathematical models.,
  • Carbon.,
  • Thermogravimetry.,
  • Porous materials.

  • Edition Notes

    StatementRoy M. Sullivan, Eric H. Stokes.
    SeriesNASA/TM -- 1999-209444., NASA technical memorandum -- 209444.
    ContributionsStokes, Eric H., NASA Glenn Research Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15563067M

      Multidimensional Numerical Analysis of the Thermal Behavior and Pyrolysis Gas Flow Inside an Orthotropic Porous Material and gas–solid mixture energy) are solved with an unstructured moving grid system. Computational Investigations of Pyrolysis in Porous Media: Impact of . models have been developed to simulate temperature and moisture conditions in building envelope assemblies over time. Such models perform transient calculations, typically reporting hourly values. Further information on some advanced hygrothermal models can be found in Hens () and ASTM Manual 40 (Trechsel ).

      The book also discusses with mass transport processes in the porous media which are further strengthen by experimental validation and specific technological applications. This book makes use of state-of-the-art techniques for the modeling of transport processes in porous structures, and considers of realistic sorption mechanisms. The theories on developing super-wetting porous surfaces and the effects of wettability on oil/water separation have been discussed. The typical 3D porous structures (e.g., sponge, foam, and aerogel), commonly used polymers, and the most reported techniques involved in developing desired porous networks have been reviewed.

    Porous Poly(2-oxazoline)-Based Polymers for Removal and Quantification of Phenolic Compounds. Chemistry of Materials , Article ASAP. Joshua D. Moon, Benny D. Freeman, Craig J. Hawker, Rachel A. Segalman. FLOW THROUGH POROUS MEDIA—A SIMULATION APPROACH Before embarking into the aspects of simulation of multi-phase fluid flow through porous medium, let us glance through components required to construct the geological reservoir model. Reservoir modeling has two major parts; static model and the dynamic model.


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Porous media and mixture models for hygrothermal behavior of phenolic composites Download PDF EPUB FB2

Porous Media and Mixture Models for Hygrothermal Behavior of Phenolic Composites. The model is developed from the theory of the flow of gases through a porous media coupled with the. POROUS MEDIA AND MIXTURE MODELS FOR HYGROTHERMAL BEHAVIOR OF PHENOLIC COMPOSITES Roy M. Sullivan National Aeronautics and Space Administration Glenn Research Center Cleveland, OH Eric H.

Stokes Southern Research Institute Birmingham, AL ABSTRACT Theoretical models are proposed to describe the interaction of water with phenolic polymer.

Porous media and mixture models for hygrothermal behavior of phenolic composites (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors / Contributors: R M Sullivan; Eric H.

Porous media and mixture models for hygrothermal behavior of phenolic composites (OCoLC) Material Type: Document, Government publication, National government publication, Internet resource: Document Type: Internet Resource, Computer File: All Authors / Contributors: R M Sullivan; Eric H Stokes; NASA Glenn Research Center.

Porous Media and Mixture Models for Hygrothermal Behavior of Phenolic Composites. By Roy M. Sullivan and Eric H. Stokes. Abstract. Theoretical models are proposed to describe the interaction of water with phenolic polymer. The theoretical models involve the study of the flow of a viscous fluid through a porous media and the thermodynamic Author: Roy M.

Sullivan and Eric H. Stokes. A flow through porous media model for pore pressure during heating of polymer–matrix composites Article in Composites Science and Technology 66(10) August with 16 Reads. The model proposed by Sullivan and Stokes [A model for the effusion of water in carbon phenolic composites.

Mech Mater ;–] is adopted to study the evolution of pore pressure in such a composite and is applied to study the pore pressure generated in a moisture saturated plate exposed to dry air and subjected to various heating rates.

Porous Media and Mixture Models for Hygrothermal Behavior of Phenolic Composites water in carbon phenolic composites. the flow of gases through a porous media coupled with the.

Eric H. Stokes's 4 research works with 17 citations and reads, including: Effect of Time at Temperature on the Ply-Normal Modulus of Carbon Phenolic. Fig. 7 shows the model of the rapid heating test to calculate the internal gas pressure in the CFRP ablator.

An axisymmetric model is assumed as shown in this figure. The model is 50 mm in diameter and 10 mm in height. The cross-sectional area of the element is a square of × mm. Two mathematical models describing heat and moisture transfer in porous media were used to predict the hygrothermal behavior of a new type of bio-based materials made of date palm concrete (DPC).

Hygrothermal Behavior of a CFRR-Metal Adhesively Bonded Joint With Coupled Transfer of Heat and Moisture Through the Thickness A Flow Through Porous Media Model for Pore Pressure During Heating of Polymer–Matrix Composites A Convection–Diffusion Porous Media Model for Moisture Transport in Polymer Composites: Model Development and.

Peer-review under responsibility of the CENTRO CONGRESSI INTERNAZIONALE SRL doi: / Energy Procedia 78 () – ScienceDirect 6th International Building Physics Conference, IBPC Measuring the hygroscopic properties of porous media in transient regime.

It is well known that a mixing law, such as a series or a parallel mechanical model of the constituent components, can generally be applied to predict the mechanical properties of y, we consider three components, namely, the NR matrix phase, CNIL, and CB phase.

Secondly, to reduce the number of components to two, we consider two components system, the NR matrix and the CNIL. Properties used in different models, its availability and reliability are analysed.

• Laboratory tests to determine some hygrothermal properties of a lime natural stone and a lime mortar were developed. • Some of these tests were performed by two laboratories.

• Tests made by different laboratories are homogeneous for homogeneous. A calibration procedure for the probes requiring solely four parameters is described.

This calibration procedure is then used to monitor the hygrothermal behavior of a rammed earth wall ( m × 1 m × m), instrumented by six probes during its manufacture, and submitted to insulated, natural convection and forced convection conditions.

Flow model. The fiber reinforcement is a dual-scale porous material and to apply the conservation of momentum is an unrealistic approach. In fact, determining the pressure profile during the impregnation means to apply the Navier-Stocks equation for each channel of fibers network and solve the equation systems in their surroundings.

The model describes heat transfer in the whole reactor and flow of gas mixture in the reaction chamber including porous medium of the preform. Matrix material deposition in the pores as a result of heterogeneous chemical reactions is considered together with evolution of porous medium structure due to the preform material densification.

can be obtained, like strains, stresses, or seepage velocities in porous media. Models with scale-dependent parameters, like models of large contrast composites as an example, may amplify some special e ects when passing to the limit with "!0.

For instance, limit model of the high contrast elasticity medium exhibits the dispersive. BOOK CHAPTERS A pragmatic model for high temperature reactive porous media, with application to ablative materials and biomass pyrolysis.

Lachaud (). In: Porous media interaction with high temperature and high speed flows. Eds O. Chazot and F. Panerai. NATO Science and Technology Organization, Paris, France. STO-AVT, chapter 9. Preprint.

A new nanocomposite consisting of activated carbon (AC) from the Cortaderia selloana flower and copper-based metal-organic framework (HKUST-1) was synthesized through a single-step solvothermal method and applied for the removal of lead ions from aqueous solution through adsorption.

The nanocomposite, AC/HKUST-1, was characterized by Scanning Electron Microscopy (SEM), X-ray .The features and limitations of the hygrothermal models in both categories are discussed below. Table 1 summarizes the models. Hygrothermal envelope models Hygrothermal envelope models target a particular building envelope in order to predict the moisture behavior within .Recent Advances in Problems of Flow and Transport in Porous Media.

por. Theory and Applications of Transport in Porous Media (Book 11) ¡Gracias por compartir! Has enviado la siguiente calificación y reseña. Lo publicaremos en nuestro sitio después de haberla revisado.